- 100 ml borosilicate ASTM burette
- Glass key stopcock
- Single straight bore
- Class A
- 0.2 ml blue ceramic graduations
- Tolerance ±0.10 ml
- Made from high quality 3.3 borosilicate glass
- Superior chemical durability*
- Complies with DIN ISO 385 and ASTM E1272
Material | 3.3 Borosilicate Glass | |
Class | Class A | |
Capacity | 100 ml | |
Graduation | 0.2 ml | |
Tolerance | ±0.1 ml | |
Stopcock | Glass Key | |
Thermal Properties | Coefficient of Linear Expansion | 32.5 x 107 / °C |
Strain Point | -515°C | |
Annealing Point | 565°C | |
Softening Point | 820°C | |
Specific Heat | 0.2 | |
Thermal Conductivity (Cal/cm3°C/Sec) | 0.0027 | |
Chemical Durability | ||
Contact Chemical (mg/m2) | Duration (hours) | Loss in weight |
Water distilled at 100°C | 6 | 10 |
Water vapour steam at 121°C | 1 | 75 |
Acid HCl | 6 | 100 |
80% H2SO4 at 130°C | 12 | 140 |
Alkali -1N solution of Na2CO3 boiling | 6 | 400 |
Isotonic infusion Fluids | ||
NaCl (0.85%) at 121°C | 2.5 | 70 |
Glucose (5%) at 121°C | 2.5 | 50 |